| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a suction recovery device capable of easily discharging liquid which is not a recovery object inside a receiver tank while performing suction work, and a suction vehicle including the suction recovery device. <P>SOLUTION: The suction recovery device includes valve groups 51-54 provided in piping connecting dust collectors 22, 23, 24 and an exhaust port 28 and controlled to be open or closed respectively to suck a recovery object into a receiver tank 21 by a suction negative pressure of a roots blower 25. When an upper limit of a liquid surface inside the receiver tank 21 is detected by an upper limit sensor 37 at the time of sucking the recovery object into the receiver tank 21, the valve groups 51-54 are controlled, a negative pressure inside the receiver tank 21 is released, and a liquid discharge valve 34 is opened. When a lower limit of the liquid surface inside the receiver tank 21 is detected by a lower limit sensor 36, the liquid discharge valve 34 is closed, the valve groups 51-54 are controlled, and the suction of the recovery object into the receiver tank 21 is restarted. <P>COPYRIGHT: (C)2013,JPO&INPIT |
